Red supergiants as progenitors of core-collapse supernovae

红超巨星被证实是II-P型核心坍缩超新星的祖先。然而，目前尚不清楚哪些红超巨星会产生SN II-P，哪些可能会产生另一种类型的SN或SN较少的坍缩，哪些会在坍缩之前转变为更热的物体。这个问题很大程度上取决于红超巨星阶段质量损失的强度。这种质量损失，包括粉尘的产生，也决定了任何SN爆炸的环境条件。该项目旨在对附近星系中的红超巨星进行普查，测量它们的光度、半径和质量损失率，并将这些特性与同一系统中SNe、SN祖恒星和其他恒星群（包括进化程度较低和较高的恒星群）的特性联系起来。

Red supergiants are confirmed progenitors of core-collapse supernovae of type II-P. However, it is not very well known which red supergiants produce a SN II-P, which ones might produce another type of SN or SN-less collapse, and which ones will transform into a hotter object before collapse. Much of this question relies on the strength of the mass loss during the red supergiant phase. This mass loss, including dust production, also sets the environmental conditions within which any SN explodes. This project seeks to make a census of red supergiants in nearby galaxies, measure their luminosities, radii and mass-loss rates, and relate these properties to those of SNe, SN progenitors, and other stellar populations (both less and more evolved) in the same systems.